目前船舶碰撞研究普遍采用忽略水对船体影响的附连水质量法，本文将水介质对船舶的影响考虑进去，建立船—水—船相互作用的流固耦合算法。并以600吨级巡逻船为研究对象，建立撞击船与被撞船整船模型以及适当大小的水域，解决了撞击船—流场—被撞船之间的耦合问题。在数值仿真计算过程中，将内部动力学及外部动力学同步分析，获得了不同工况下被撞船的运动状态以及损伤变形、碰撞速度和碰撞力等动态结构响应。所获结果可为巡逻船在不可避免地发生碰撞时提供操船建议，对于提高巡逻船的战斗力具有重要的意义。
At present, ship collision studies generally adopt the attached water quality method that ignores the effect of water on the hull. This paper takes into account the influence of the water medium on the ship, and establishes a fluid-structure interaction algorithm for ship-water-ship interaction. With 600 tons of patrol vessels as the research object, the entire ship model of the collision ship and the collided ship and the appropriate size of water area were established, and the coupling problem between the collision ship, the flow field and the collided ship was solved. In the process of numerical simulation calculation, the internal dynamics and external dynamics are analyzed synchronously, and the dynamic state of the collided ship under different working conditions and the dynamic structural response such as damage deformation, collision velocity and collision force are obtained. The results obtained can provide patrol boats with advice on the inevitable collisions, which is of great significance for improving the combat effectiveness of patrol boats.
2020,42(3): 12-16 收稿日期：2018-08-17
DOI：10.3404/j.issn.1672-7649.2020.03.003
分类号：U661.4
作者简介：罗凯(1980-),男,高级工程师,研究方向为船体结构设计。
参考文献：
[1] TABRI, K. Influence of coupling in the prediction of ship collision damage[J]. Ships Offshore Struct., 2012, 7(1):47-54.
[2] ZHANG, S., PEDERSEN, P. T. A method for ship collision damage and energy absorption analysis and its validation[J]. Ships Offshore Struct., 2017, 12(Sup1):S11-S20.
[3] 张志强, 李华峰, 张咏鸥, 等. 失效准则在船舶碰撞破坏中的应用研究[J]. 舰船科学技术, 2017(1):56-62.
[4] 宋明. 船舶碰撞载荷及结构响应分析方法研究[D]. 大连理工大学, 2017.
[5] 刘敬喜, 崔濛, 龚榆峰. 船舶碰撞仿真失效准则比较[J]. 中国舰船研究, 2015(4):79-85.
[6] 商庆彬. 船舶碰撞数值模拟研究[D]. 大连海事大学, 2014.
[7] 窦旭. 内河小型LNG船舶碰撞结构损伤数值研究[D]. 大连海事大学, 2016.
[8] MARINATOS, J. N., SAMUELIDES, M. S. Towards a unified methodology for the simulation of rupture in collision and grounding of ships[J]. Marine Structure, 2015, 42:1-32.
[9] 刘超, 李范春. 有限元仿真在船舶碰撞研究中的运用[J]. 大连海事大学学报, 2013(1):15-18
